LV52205MU Bi-CMOS IC www.onsemi.com LED Boost Driver with PWM Dimming Overview The LV52205MU is a high voltage boost driver for LED drive. LED current is set by the external resistor R1 and LED dimming can be done by changing FB voltage with PWM control. Feature Operating Voltage from 2.7V to 5.5V Integrated 42V MOSFET PWM dimming for Brightness Control UDFN6 22, 0.65P 600kHz Switching Frequency Typical Applications LED Display Backlight Control D1 L1 22H VBAT C1 C2 1F 1F PWM LV52205 C3 220nF R1 10 ORDERING INFORMATION See detailed ordering and shipping information on page 12 of this data sheet. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number : January 2015 - Rev. 1 LV52205MU/D FB V IN FCAP PWM GND SWLV52205MU Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V max V 5.5 V CC CC Maximum pin voltage1 V1 max SW 42 V Maximum pin voltage2 V2 max Other pin 5.5 V Allowable power dissipation Pd max Ta = 25C *1 2.05 W Operating temperature Topr -30 to +85 C Storage temperature Tstg -55 to +125 C *1 Mounted on a specified board: 70mm50mm1.2mm (4 layer glass epoxy) Caution 1) Absolute maximum ratings represent the values which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Recommendation Operating Condition at Ta = 25 C Parameter Symbol Conditions Ratings Unit Supply voltage range1 V op V 2.7 to 5.5 V CC CC PWM frequency Fpwm 300 to 100k Hz Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. Electrical Characteristics Analog block at Ta 25C, V = 3.6V, unless otherwise specified CC Ratings Parameter Symbol Conditions Unit min typ max Standby current dissipation I1 SHUTDOWN 0 5 A CC DC/DC current dissipation I2 V = 30V, I = 20mA 1 mA CC OUT LED FB voltage Vfb PWM duty 100% 0.19 0.2 0.21 V FB pin leak current Ifb 1 A OVP voltage Vovp SW 40 41 42 V SWOUT ON resistance Ron IL = 100mA 700 m NMOS switch current limit ILIM Vfb = 200mV 0.7 A OSC frequency Fosc 600 kHz High level input voltage VH PWM 1.5 V V IN CC Low level input voltage VL PWM 0 0.4 V IN Under voltage lockout Vuvlo V falling 2.2 V IN PWM setup time from Ton 20 us shutdown PWM low time to shutdown Toff 8.9 ms Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 2